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11#ifndef S390_CCW_H
12#define S390_CCW_H
13
14
15
16typedef unsigned char u8;
17typedef unsigned short u16;
18typedef unsigned int u32;
19typedef unsigned long long u64;
20typedef unsigned long ulong;
21typedef unsigned char __u8;
22typedef unsigned short __u16;
23typedef unsigned int __u32;
24typedef unsigned long long __u64;
25
26#define true 1
27#define false 0
28#define PAGE_SIZE 4096
29
30#ifndef EIO
31#define EIO 1
32#endif
33#ifndef EBUSY
34#define EBUSY 2
35#endif
36#ifndef NULL
37#define NULL 0
38#endif
39#ifndef MIN
40#define MIN(a, b) (((a) < (b)) ? (a) : (b))
41#endif
42#ifndef MIN_NON_ZERO
43#define MIN_NON_ZERO(a, b) ((a) == 0 ? (b) : \
44 ((b) == 0 ? (a) : (MIN(a, b))))
45#endif
46
47#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
48
49#include "cio.h"
50#include "iplb.h"
51
52typedef struct irb Irb;
53typedef struct ccw1 Ccw1;
54typedef struct cmd_orb CmdOrb;
55typedef struct schib Schib;
56typedef struct chsc_area_sda ChscAreaSda;
57typedef struct senseid SenseId;
58typedef struct subchannel_id SubChannelId;
59
60
61void disabled_wait(void);
62void consume_sclp_int(void);
63
64
65void panic(const char *string);
66void write_subsystem_identification(void);
67extern char stack[PAGE_SIZE * 8] __attribute__((__aligned__(PAGE_SIZE)));
68unsigned int get_loadparm_index(void);
69
70
71void sclp_print(const char *string);
72void sclp_setup(void);
73void sclp_get_loadparm_ascii(char *loadparm);
74
75
76unsigned long virtio_load_direct(ulong rec_list1, ulong rec_list2,
77 ulong subchan_id, void *load_addr);
78bool virtio_is_supported(SubChannelId schid);
79void virtio_blk_setup_device(SubChannelId schid);
80int virtio_read(ulong sector, void *load_addr);
81int enable_mss_facility(void);
82ulong get_second(void);
83
84
85void zipl_load(void);
86
87static inline void fill_hex(char *out, unsigned char val)
88{
89 const char hex[] = "0123456789abcdef";
90
91 out[0] = hex[(val >> 4) & 0xf];
92 out[1] = hex[val & 0xf];
93}
94
95static inline void fill_hex_val(char *out, void *ptr, unsigned size)
96{
97 unsigned char *value = ptr;
98 unsigned int i;
99
100 for (i = 0; i < size; i++) {
101 fill_hex(&out[i*2], value[i]);
102 }
103}
104
105static inline void print_int(const char *desc, u64 addr)
106{
107 char out[] = ": 0xffffffffffffffff\n";
108
109 fill_hex_val(&out[4], &addr, sizeof(addr));
110
111 sclp_print(desc);
112 sclp_print(out);
113}
114
115static inline void debug_print_int(const char *desc, u64 addr)
116{
117#ifdef DEBUG
118 print_int(desc, addr);
119#endif
120}
121
122static inline void debug_print_addr(const char *desc, void *p)
123{
124#ifdef DEBUG
125 debug_print_int(desc, (unsigned int)(unsigned long)p);
126#endif
127}
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131
132
133#define KVM_S390_VIRTIO_NOTIFY 0
134#define KVM_S390_VIRTIO_RESET 1
135#define KVM_S390_VIRTIO_SET_STATUS 2
136#define KVM_S390_VIRTIO_CCW_NOTIFY 3
137
138static inline void yield(void)
139{
140 asm volatile ("diag 0,0,0x44"
141 : :
142 : "memory", "cc");
143}
144
145#define MAX_SECTOR_SIZE 4096
146
147static inline void sleep(unsigned int seconds)
148{
149 ulong target = get_second() + seconds;
150
151 while (get_second() < target) {
152 yield();
153 }
154}
155
156static inline void IPL_assert(bool term, const char *message)
157{
158 if (!term) {
159 sclp_print("\n! ");
160 sclp_print(message);
161 panic(" !\n");
162 }
163}
164
165static inline void IPL_check(bool term, const char *message)
166{
167 if (!term) {
168 sclp_print("\n! WARNING: ");
169 sclp_print(message);
170 sclp_print(" !\n");
171 }
172}
173
174extern const unsigned char ebc2asc[256];
175static inline void ebcdic_to_ascii(const char *src,
176 char *dst,
177 unsigned int size)
178{
179 unsigned int i;
180
181 for (i = 0; i < size; i++) {
182 unsigned c = src[i];
183 dst[i] = ebc2asc[c];
184 }
185}
186
187#endif
188